Joint for window and door screens.



No. 891,604. PATENTED JUNE 23, 1908.

' J. H. DIAMOND.

JOINT FOR WINDOW AND DOOR SCREENS, 6v :a APPLIOATION FILED JULY 13. 1907.

2 SHEETSSHEET 1.

"gum a u ll n y Ilwen/wr PATENTED JUNE 23, 1908.

J. H. DIAMOND.- JOINT FOR WINDOW AND DOOR SCREENS, m

APPLICATION FILED JULY 13, 1907.

2 SHEETSSHEBT 2.

UNITED STATES PATENT OFFICE.

JAMES H. DIAMOND, OF WILKINSBURG, PENNSYLVANIA, AS SIGNOR TO THE DIAMOND HARDWARE MANUFACTURING COMPANY, OF PITTSBURG, PENNSYLVANIA.

JOINT FOR WINDOW AND DOOR SCREENS,

No. 891,604. a

To all whom it may concern:

.Be it known that'I, JAMES H. DIAMOND, a

resident of Wilkinsburg, in the county ofAllegheny and State of Pennsylvania, have invented certain new and useful Improvements in Joints for Window and Door Screens, &c., of which the following is.a specification.- i

This invention relates to metallic oints or corner members which, while designed primarily for window and door screens, are adapted for use in the construction of frames of various kinds, or wherever such devices may be utilized. I

It is well known that screen and similar frames are weakest at their corners or at the joints of the frame-forming strips, and one purpose of this invention is to provide joints possessing maximum strength atthe miter or joint 11116.

A further purpose is toso construct the joint members that the frame strips may be secpred thereto without the use of screws of nai s.

Still a further purpose is to provide the joint with an improved hinge formation, whereby frames constructed with the joint may be conveniently,mounted In the accom anyin drawings, Fi ure 1 1s a front view 0 a W1Il ow screen having the improvement applied thereto, and Fig. 2 is a similar view of a door screen. Fig. Stis a perspective view of oneof the cornerjoints efore the frame-forming stripsare ap lied thereto. Fig. 4 is the rear elevation o the same with the strips applied. Fig. 5 is an edge view illustrating the improved hinge, and Fig. 6 is a front view of the same. Fig.

7 is a cross sectional View, enlarged, taken on line 77 of Fig. 4, and Fig. 8 is a similar view taken on the miter line 8-8 'of Fig. 4. Fig. 9 is an outline ofthe blank from which one of the corner joints is pressed. FigflO is a pers' ective view of a joint of modified form. ig. 11 is a view of one of the T-joints-used for the intermediate rails of a door.

The joints are pressed from blanks of sheet metal of suitable gage, the blankfor one of I the corner joints being illustrated in Fig. 9.

These corner joints consist each of the angularly arranged branches 2, havin their outer edges flanged upward at 3, with the edges of the flanges indented to form tongues 4, while similartongues are formed on the edges of the upturned flanges 5 at the inner Specification of Letters Patent.

Application filed July 13, 1907.

Patented June 23, 1908.

Serial No. 383,648.

edges of branches 2. In order that flanges 3 may be turned in the die, part of the metal between the adjacent ends thereof is removed, as indicated at 6, Fig. 9, the metal at 'the inner angle at said joint (in line with the miter line 88) remaining as indicated at 7,

so that when the blank is pressed into form the metal 7 forms the strengthening bulge 7 on the outer corner of the joint.

The inside flanges 5 are cut inward toward miter line 8 8, and instead of forming an angle at their juncture, a curved cut 8 is made which connects and makes continuous the flanges 5, and owing to this curved formation when the joint 5 is pressed into shape, the curved portion 8 is flanged or turned upward as indicated at 8, thus forming a flange which crossesthe miter line, and which adds materially to the strength of the joint. This formation, atthe inner corner of the joint, together with bulge 7 at the outer corner,

makes the joint very rigid at the point where it is subjected to the greatest strength.

After the oint has been pressed into shape, it is only necessary to insert the frameforming strips 9 into branches 2, and then bend tongues 4 thereover,'thereby securely holding the strips Without the use of either screws or nails. The wire netting 10 maybe secured to the frame in any desired manner. The means here shown ,and that which I prefer, is to groove strips 9 on their rear faces, as indicated at 11, and then stretch the wire thereover and secure it with occasional tacks 12. able tool the'wire is pressed downward into the grooves 11, which 0 eration serves alsof to stretch it, and then t e top and finishing strips 13 are nailed to strips 9, strips 13 being formed with beads 14 complementary with grooves 11, thereby securely holding the wire.

The two joints on the same side of a frame are referably constructed for hingingto a win ow frame or other structure. To this end, the outer face of the joint is pressed with two vertically separated indentations 15, with the metal 16 between the indenta tions open at the rear from one indentation to the other to receive pintle-forming branch 17 of an ordinary L-screw 18 projecting from the window frame, thus completing a simple and effective hinge upon which the screen may be swung for opening and closing the ,cross rails of screen doors.

of the joint are preferably arranged in the angle or corner thereof so thatthe screen may swing as far as possible. It will be noted that in thus constructing the joint it has no parts which roject beyond the outer lines of the joint. flor window screen use it is only necessary to construct two of each set of four joints with the hinge feature.

N The T-joints 19, illustrated in Figs. 2 and 1 1, are. adapted for securing the intermediate They are fastened to the strips forming the door frame in the same way as the corner strips above described, and they also embody the strengthened inner-angle feature above set forth.

I claim -1. An angular pressed metal joint having a turned edge forming an integrally continuous flange along both branches of the joint which crosses the miter line thereof;

2. A pressed metal oin't having angularly arranged branches, an edge of the joint being cut away at a point intersecting the miter line of the branches, said edge turned on a line inwardly from the cut-away portion to form an integrally continuous flange which crosses the miter line.

3. A pressed metal joint having angularly arranged branches, the metal of the blank from which the joint is formed being cut away at a point intersecting the miter line and the edges of the blank turned on an angular line located inwardly from the'cut-away portion to provide the joint with an edge flange, the angle of the line of turning being coincident with the miter line of the joint, thereby forming a flange corner which 18 out or severed for a portion of its depth with the metal beneath the cut forming an'integral part of the flange.

4. A corner joint for screen frames, etc., consisting" of a plate of sheet metal having integral right angle branches, the inner and outer edges of the branches bent in the same direction to form flanges for embracing the inner and outer edges of the screen frame, the flanges of the inner edges being integrally continuous acrossthe miter line.

5. A corner joint for screen frames, etc., consisting of a plate of ductile sheet metal having integral right-angle branches, the inner edges of the branches being bent at right angles to the plane of the plate to form a continuous integral flange which crosses the miter line of the branches, the flange being narrowest and rounded at and adjacent the miter line of the branches and widened out from said point along each of the branches.

6. A corner joint for screen frames, etc. consisting of a plate of ductile metal having right angle branches, the inner and outer edges of the branches being bent in the same direction at right angles to the plane of the plate to form flanges for embracing opposite ing branches,'the outer edge of the branches being bent to form flanges, and the inner edges thereof bent on a continuous line to form an integrally continuous flange which crosses the miter line of said branches.

9. A joint having angularly arranged holding branches, the outer edge of the jomt being cut away at a point intersecting the miter line of the joint and the outer edges of the branches bent to form flanges, the inner edges of the intersecting branches being turned to form an integrally continuous flange for both branches'said flange crossing the miter line of the joint.

10. A pressed metal joint havingangularly arranged holding branches, the inner angle of the metal being curved ata point intersecting the miter line of the joint, whereby when the inner edges of the branches are turned to form flanges the curved edge intersecting the miter line is also turned to form a reinforcing flange at said joint. j

1 1. A pressed metal joint having angularly arranged holding branches, part'of the metal of the joint being cut away at the outer end of the miter line with the remainder of the metal at said point forming a-reinforcement when the outer edges of the branches are bent to form flanges, the inner edge of the joint being curved at the miter line, whereby when the inner edges are bent said curved portion is also bent and forms a flange which traverses the inner end of the miter line.

12. A joint member formed of ductile metal and constructed with angularly arranged holding branches, the edges of the.

J. M. NEsnrr, JNO. J. FITZGERALD. 

